The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 1989
Filed:
Dec. 23, 1987
Samuel H Gailbreath, Jr, Boise, ID (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A digital phase lock loop utilizing a programmable delay line to phase shift the output of a crystal generated reference clock signal and lock it to digitized data transitions recorded on a suitable medium is provided. The output of the delay line is compared to the digitized data transitions in a phase detector to determine if the delay line output leads or lags the data transitions. The delay line is then reprogrammed to reduce the phase difference between the data transition and the delay output to a minimum value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile